UPDATE: Works with latest TBC (2.4.3) + Updated to Ace3 Framework
simple 'countdown' mod for raidleaders (announce via /rw) - i wrote this for my guild but now decided to share it with others.
usage:
Start with /gotimer start - starts 15s timer (Announce: 15s, 10s, 5, 4, 3, 2, 1, "GO")
Emergency stop with /gotimer stop - in case something went wrong (disconnects, adds, mana issues, ...)